Aniek Nurhayati, D. Astiti Hadiska Putri, and A. Desnafitri. “Indonesian Takfiri Movement on Online Media in Umberto Eco’s Semiotic Perspective”. Islamica: Jurnal Studi Keislaman, Vol. 15, no. 2, Mar. 2021, pp. 195-22, doi:10.15642/islamica.2021.15.2.195-222.